Construction and performance evaluation of a rate 8/10 MSN code for periodically time-varying trellis diagram
✍ Scribed by Hidetoshi Saito; Takafumi Nishikawa; Yoshihiro Okamoto; Hisashi Osawa
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 504 KB
- Volume
- 82
- Category
- Article
- ISSN
- 8756-663X
No coin nor oath required. For personal study only.
✦ Synopsis
A conventional 8/10 MSN code was constructed so as not to generate a quasi-catastrophic sequence in the decoder trellis diagram, and needing sliding block decoders. In this article, a new 8/10 MSN code is designed by using a periodically time-varying trellis diagram. The proposed code has an improved squared Euclidean distance distribution between PR output sequences and an improved number of paired codewords that have minimum squared free Euclidean distance decreases as compared with the conventional code. Further, this code can be decoded simply by referring codeword sequences corresponding to data sequences in a look-up table, needing no sliding block decoder. As a result, the proposed 8/10 MSN-coded PR4ML system can provide about 0.8 dB SNR gain over the conventional system at a bit error rate of 10 4 and a normalized linear density of 3.